Oralni anabolicki steroidi

Drug
Formate days
Acetate 3 days
Propionate days
Phenylpropionate days
Butyrate 6 days
Valerate days
Hexanoate 9 days
Caproate 9 days
Isocaproate 9 days
Heptanoate days
Enanthate days
Octanoate 12 days
Cypionate 12 days
Nonanoate days
Decanoate 15 days
Undecanoate days

The endogenous sex hormones produce dispositional changes in the developing child as well as imparting unique male and female dispositional patterns. Age-related changes have been observed for digoxin disposition and caffeine and theophylline metabolism. These age-related dispositional changes have led to age-dependent dosing recommendations. Studies with caffeine and antipyrine indicate that this change in drug disposition occurs over a short period of time, is seen earlier in girls than in boys, and is related to pubertal (Tanner) stage and the "growth spurt". Significant changes in endogenous sex hormone concentrations occur during the menstrual cycle and during pregnancy, leading to alterations in drug binding, distribution, and clearance. Oral contraceptives (OCs) inhibit the metabolism of certain drugs resulting in toxicity or lack of efficacy. Rifampin induces the OC metabolism, resulting in decreased clinical effectiveness. Most studies did not examine these kinetic and dynamic interactions between adult and adolescent users. It is estimated that there are over 45 anabolic steroid compounds available for abuse by athletes, and their use is increasing among male and female adolescents. Although the adolescent is at increased risk of developing adverse effects from these agents, a systematic evaluation of the long-term effects of anabolic steroid abuse has not been undertaken in this population. Further research is needed regarding the influence of endogenous and exogenous hormones on adolescent drug kinetics and dynamics. Because of their frequency of use among adolescents, OCs and anabolic steroids require particular emphasis.

Oralni anabolicki steroidi

oralni anabolicki steroidi

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oralni anabolicki steroidi

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